The back of tile punches can be lower or upper and also isostatics, no isostatics or compensated.

Lower or upper back of tile no isostatic punches are those that do not have a hydraulic system installed for pressure compensation

Lower or upper back of tile isostatic punches; can be manufactured with metal or silicone grille according to the requirements and application of the punch.

For the most aggressive reliefs that should be produced with good face up, it is used lower back of tile punches with compensation which get an optimal material load in each cavity.